some palestinians claim he was assassinated by israel. israeli officials deny the claim. >> translator: the palestinians are confident that israel is behind the whole thing. we need to prove this to the rest of the world. >> experts from a swiss laboratory and others will conduct a detailed examination of the samples. they will take several months to conclude and clear up questions of arafat's death. palestinian authorities are determined to get to the bottom of this mystery. nhk world, ramallah. >>> delegates at the u.n. conference on climate change are trying to agree on what to do about global warming. it is becoming clear the climate for compromise has chilled. industrialized countries commitments to the protocol expire at the end of the year. delegates at the meeting in doha, qatar, are divided over extending the agreement. the representatives agree they need to reduce greenhouse gas emissions to stop global warming but arguing over how long the protocol should be extended. delegates from the european union and australia are calling